Evaluation and Monitoring the Winding Quality on Multi-Layer Drums

The safe operation of a multi-layer drum requires, among other things, an optimum winding behaviour of the rope on the drum. Up to now, the winding behaviour of the system is usually only assessed visually. A new method for a quantitative assessment of the winding quality is presented. With this method, a targeted optimization is for the first time possible. To this end, the ideal theoretical lay pattern of the windings is calculated. The geometries of the drum and the rope and additionally their elastic deformation behaviour are considered. In addition, the actual lay pattern of the windings is recorded by laser profile scanners and evaluated by computer. By comparing the nominal and the actual position, the winding quality can then be determined in the form of characteristic values. The procedure is presented based on a comparative study. The winding quality under full load is compared with typical operating situations. Especially in the lower winding layers, which are important for the overall stability of the winding package, a poor winding quality can occur at low loads. This article is an excerpt from the doctoral thesis “Kompatibilität von Faserseil und mehrlagig bewickelter Seiltrommel“ [1].

Author(s): M. Schulze and A. Lohrengel